And of course it can be made immutable using this: http://blogs.msdn.com/b/dotnet/archive/2013/09/12/immutable-collections-are-now-rc.aspx http://blogs.msdn.co

And of course it can be made immutable using this: http://blogs.msdn.com/b/dotnet/archive/2013/09/12/immutable-collections-are-now-rc.aspx http://blogs.msdn.com/b/dotnet/archive/2013/09/12/immutable-... C# is mutable-first but well capable of providing immutability (requires good developers but so does Scala/F# :p).